Easy-to-clean drinking straw

Abstract

An easy-to-clean drinking straw include a C-section tube having a slot and a resilient sheet with its front end combined with an inner edge of the slot as a unity. The resilient sheet is such configured that when rolled up toward the slot from its rear end and pressed into the C-section tube through the slot, the resilient sheet becomes tubular and gets positioned in the C-Section tube, and upon release of the pressing force applied thereto, the resilient sheet shows unfolding tendency due to its own resilience and thereby fits closely the inner wall of the C-section tube, so as to form the drinking straw. For cleaning, the resilient sheet rolled up and positioned in the C-section tube is pulled out through the slot of the C-section tube, and then the resilient sheet automatically unfolds and returns to a sheet due to its own resilience.

What is claimed is: 
     
         1 . An easy-to-clean drinking straw comprising: a C-section tube and a resilient sheet, wherein the C-section tube has a slot whose inner edge is combined with a font end of the resilient sheet as a unity; and
 the resilient sheet being such configured that when rolled up toward the slot of the C-section tube from its rear end and pressed into the C-section tube through the slot, the resilient sheet becomes tubular and gets positioned in the C-Section tube, and upon release of pressing force applied thereto, the resilient sheet shows unfolding tendency due to its own resilience and thereby abuts against and fits closely an inner wall of the C-section tube, so as to form the drinking straw.   
     
     
         2 . An easy-to-clean drinking straw comprising: a C-section tube and a resilient sheet, wherein the C-section tube has a slot whose inner edge is combined with a font end of the resilient sheet as a unity;
 the resilient sheet having its rear end formed with a raised edge; and   the resilient sheet being such configured that when rolled up toward the slot of the C-section tube from its rear end and pressed into the C-section tube through the slot, the resilient sheet becomes tubular and gets positioned in the C-Section tube, and upon release of pressing force applied thereto, the resilient sheet shows unfolding tendency due to its own resilience and thereby abuts against and fits closely an inner wall of the C-section tube, so as to form the drinking straw.   
     
     
         3 . An easy-to-clean drinking straw comprising: a C-section tube and a resilient sheet, wherein the C-section tube has a slot whose inner edge is combined with a font end of the resilient sheet as a unity;
 the resilient sheet having its rear end formed with a C-section edge; and   the resilient sheet being such configured that when rolled up toward the slot of the C-section tube from its rear end and pressed into the C-section tube through the slot, the resilient sheet becomes tubular and gets positioned in the C-Section tube, and upon release of pressing force applied thereto, the resilient sheet shows unfolding tendency due to its own resilience and thereby abuts against and fits closely an inner wall of the C-section tube, so as to form the drinking straw.